这个管理系统输入信息之后没有办法执行功能

Question

题目：使用链表、文件(合理使用链表,如在插入、删除时使用合理,其它场合未必合理)。(2)职工信息包括职工号、姓名、性别、年龄、学历、工资、住址、电话等(职工号不相同)。试设计一职工信息管理系统,使之能够提供下列功能:①系统以菜单方式工作②职工信息录入功能(职工信息用文件保存)。③职工信息浏览功能。④职工信息查询功能,查询方式有两种:按学历查询;按职工号查询。⑤职工信息删除、插入、修改功能。⑥基于各种基本数据的统计计算。例如,统计职工总人数、本科以上学历人数等。(代码在下面，调用menu函数后输入了数据，但是在选择下面功能执行的时候总是无法执行，求帮助)

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define SIZEWO sizeof(struct Worker)
#define SIZEJD sizeof(struct Jd)

void creatFile(char *FName);/*创建文件*/
struct Jd*CreatL(char *FName);/*创建链表*/
void WriteToFile(struct Jd*head,char*FName);
void menu();/*菜单*/
void Entry(struct Jd*L);/*录入职工信息*/
void Liulan(struct Jd*L);/*浏览职工信息*/
void Search1(struct Jd*L);/*按照学历查找*/
void Search2(struct Jd*L);/*按照职工号查找*/
void Delete(struct Jd*L);/*删除职工信息*/
void Add(struct Jd*L);/*添加职工信息*/
void Revise(struct Jd*L);/*修改职工信息*/
void WriteToFile(struct Jd *L,char *FName);/*将链表节点数据写往文件*/
void Zong(struct Jd*L);/*计算职工总人数*/
void Ben(struct Jd*L);/*计算本科以上学历的总人数*/

struct Worker
{
    int number;
    char name[20];
    char sex[20];
    int age;
    char xueli[20];
    float gongzi;
    char zhuzhi[20];
    char phone[20];
};

struct Jd
{
    struct Worker yuan;
    struct Jd *next;
};

int main()
{
    while(1)
    {
        menu();
    }
    return 0;
}

void creatFile(char *FName)
{
    int i=1;
    struct Worker zhi;
    FILE *fp;
    if((fp=fopen(FName,"wb"))==NULL)
    {
        printf("cannot open file\n");
        exit(0);
    }
    while(i!=0)
    {
        printf("enter data of worker:\n");
        printf("职工号：");
        scanf("%d",&zhi.number);
        printf("姓名：");
        scanf("%s",zhi.name);
        printf("性别：");
        scanf("%s",zhi.sex);
        printf("年龄：");
        scanf("%d",&zhi.age);
        printf("学历：");
        scanf("%s",zhi.xueli);
        printf("工资：");
        scanf("%f",&zhi.gongzi);
        printf("住址：");
        scanf("%s",zhi.zhuzhi);
        printf("电话号码：");
        scanf("%s",zhi.phone);
        if(fwrite(&zhi,SIZEWO,1,fp)!=1)
            printf("file write error\n");
        printf("还需要输入新的职工数据");
        scanf("%d",&i);
    }
    fclose(fp);
}

struct Jd*CreatL(char *FName)
{
    FILE *fp;
    struct Jd *p1,*p2,*head=NULL;
    struct Worker zhi;
    if((fp=fopen(FName,"rb"))==NULL)
    {
        printf("cannot open file\n");
        exit(0);
    }
    while(fread(&zhi,SIZEWO,1,fp)==1)
    {
        p1=(struct Jd*)malloc(SIZEJD);
        p1->yuan=zhi;
        p1->next=NULL;
        if(head==NULL)
        {
            head=p1;
            p2=p1;
        }
        else
        {
            p2->next=p1;
            p2=p1;
        }
    }
    fclose(fp);
    return (head);
}

void WriteToFile(struct Jd*L,char *FName)
{
    FILE *fp;
    struct Jd *p1;
    if((fp=fopen(FName,"wb"))==NULL)
    {
        printf("cannot open file\n");
        exit(0);
    }
    p1=L;
    while(p1!=NULL)
    {
        fwrite(&(p1->yuan),SIZEWO,1,fp);
        p1=p1->next;
    }
    fclose(fp);
}

void menu()
{
    int i;
    printf("欢迎使用职工管理系统\n");
    printf("1.职工信息录入\n");
    printf("2.职工信息浏览\n");
    printf("3.职工信息查询（按学历）\n");
    printf("4.职工信息查询（按职工号）\n");
    printf("5.职工信息删除\n");
    printf("6.职工信息插入\n");
    printf("7.职工信息修改\n");
    printf("8.统计职工总人数\n");
    printf("9.统计本科以上学历人数\n");
    printf("请输入您想要选择的功能编号：");
    scanf("%d",&i);
    struct Jd*L=NULL;
    char FileName[128]={'\0'};
    strcpy(FileName,"worker.txt");
    switch (i) 
    {
        case 1:
            {
                creatFile(FileName);
                L=CreatL(FileName);
            }
            break;
        case 2:
            Liulan(L);
            break;
        case 3:
            Search1(L);
            break;
        case 4:
            Search2(L);
            break;
        case 5:
            Delete(L);
            break;
        case 6:
            Add(L);
            break;
        case 7:
            Revise(L);
            break;
        case 8:
            Zong(L);
            break;
        case 9:
            Ben(L);
            break;
        default:
            printf("请输入正确的数字才能使用菜单！");
            break;
    }
}

void Liulan(struct Jd*L)
{
    struct Jd*p1;
    p1=L;
    while(p1!=NULL)
    {
        printf("%d %s %s %d %s %.2f %s %s\n",p1->yuan.number,p1->yuan.name,p1->yuan.sex,p1->yuan.age,p1->yuan.xueli,p1->yuan.gongzi,p1->yuan.zhuzhi,p1->yuan.phone);
        p1=p1->next;
    }
}

void Search1(struct Jd*L)
{
    char xue[20];
    printf("请输入您要查询的学历：");
    scanf("%s",xue);
    struct Jd*p1;
    p1=L;
    while(p1!=NULL)
    {
        if(strcmp(p1->yuan.xueli,xue)==0)
            printf("%d %s %s %d %s %.2f %s %s\n",p1->yuan.number,p1->yuan.name,p1->yuan.sex,p1->yuan.age,p1->yuan.xueli,p1->yuan.gongzi,p1->yuan.zhuzhi,p1->yuan.phone);
        p1=p1->next;
    }
}

void Search2(struct Jd *L)
{
    int num;
    printf("请输入您要查询的职工号：");
    scanf("%d",&num);
    struct Jd* p1;
    p1=L;
    while(p1!=NULL)
    {
        if(p1->yuan.number==num)
        {
            printf("%d %s %s %d %s %.2f %s %s\n",p1->yuan.number,p1->yuan.name,p1->yuan.sex,p1->yuan.age,p1->yuan.xueli,p1->yuan.gongzi,p1->yuan.zhuzhi,p1->yuan.phone);
            break;
        }
        p1=p1->next;
    }
}

void Delete(struct Jd*L)
{
    int num,flag=0;
    printf("请输入您要删除的职工号：");
    scanf("%d",&num);
    struct Jd* p1,*p2;
    p1=L;
    p2=L;
    while(p1!=NULL)
    {
        if(p1->yuan.number==num)
        {
            flag=1;
            if(p1==L)
            {
                L=L->next;
                free(p1);
                p1=L;/*L发生了改变，因此一定要给p1,p2重新赋值*/
                p2=L;
            }
            else
            {
                p2->next=p1->next;
                free(p1);
                p1=p2;/*p1被释放了，后续应该从p2所在的节点开始检测*/
            }
        }
        else
        {
            p2=p1;
            p1=p1->next;
        }
    }
    if(flag==0)
        printf("没有您要删除的职工号，请确认后再进行操作！\n");
    else
    {
        printf("删除成功！\n");
        WriteToFile(L,"worker.txt");
    }
}

void Revise(struct Jd*L)
{
    int num,flag=0;
    printf("请输入您要修改信息的职工的职工号：");
    scanf("%d",&num);
    struct Jd *p1;
    p1=L;
    while(p1!=NULL)
    {
        if(p1->yuan.number==num)
        {
            flag=1;
            printf("请输入您要修改的内容：\n");
            scanf("%d %s %s %d %s %f %s %s",&p1->yuan.number,p1->yuan.name,p1->yuan.sex,&p1->yuan.age,p1->yuan.xueli,&p1->yuan.gongzi,p1->yuan.zhuzhi,p1->yuan.phone);
        }
        p1=p1->next;
    }
    if(flag==0)
      printf("没有您要删除的职工号，请确认后再进行操作！\n");
    else
    {
        printf("删除成功！\n");
        WriteToFile(L,"worker.txt");
    }
}

void Revise(struct Jd*L)
{
    int num,flag=0;
    printf("请输入您要修改信息的职工的职工号：");
    scanf("%d",&num);
    struct Jd *p1;
    p1=L;
    while(p1!=NULL)
    {
        if(p1->yuan.number==num)
        {
            flag=1;
            printf("请输入您要修改的内容：\n");
            scanf("%d %s %s %d %s %f %s %s",&p1->yuan.number,p1->yuan.name,p1->yuan.sex,&p1->yuan.age,p1->yuan.xueli,&p1->yuan.gongzi,p1->yuan.zhuzhi,p1->yuan.phone);
        }
        p1=p1->next;
    }
    if(flag==0)
        printf("未能找到您要修改的职工的职工号，请检查后再输入！\n");
    else
    {
        printf("修改成功！\n");
        WriteToFile(L,"worker.txt");
    }
}

void Add(struct Jd*L)
{
    printf("请输入要插入的职工的各项信息：");
    struct Jd *p1,*p2,*p;
    p1=L;
    p2=L;
    p=(struct Jd*)malloc(SIZEJD);
    p->next=NULL;
    scanf("%d %s %s %d %s %f %s %s",&p->yuan.number,p->yuan.name,p->yuan.sex,&p->yuan.age,p->yuan.xueli,&p->yuan.gongzi,p->yuan.zhuzhi,p->yuan.phone);
    while(p1!=NULL)
    {
        p2=p1;
        p1=p1->next;
    }
    p2->next=p;
    p1=L;
    while(p1!=NULL)
    {
        printf("%d %s %s %d %s %.2f %s %s\n",p1->yuan.number,p1->yuan.name,p1->yuan.sex,p1->yuan.age,p1->yuan.xueli,p1->yuan.gongzi,p1->yuan.zhuzhi,p1->yuan.phone);
        p1=p1->next;
    }
    printf("添加成功！\n");
    WriteToFile(L,"worker.txt");
}

void Zong(struct Jd*L)
{
    struct Jd*p1;
    p1=L;
    int count=0;
    while(p1!=NULL)
    {
        count++;
        p1=p1->next;
    }
    printf("职工的总人数为：%d\n",count);
}

void Ben(struct Jd*L)
{
    struct Jd*p1;
    p1=L;
    int count=0;
    while(p1!=NULL)
    {
        if(strcmp(p1->yuan.xueli,"硕士")==0||strcmp(p1->yuan.xueli,"博士")==0||strcmp(p1->yuan.xueli,"博士后")==0)
            count++;
        p1=p1->next;
    }
    printf("本科以上学历的人数为：%d\n",count);
} 

Answer 1

整体修改完善如下，改动处见注释，供参考：

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define SIZEWO sizeof(struct Worker)
#define SIZEJD sizeof(struct Jd)
struct Worker{
    int   number;
    char  name[20];
    char  sex[20];
    int   age;
    char  xueli[20];
    float gongzi;
    char  zhuzhi[20];
    char  phone[20];
};

struct Jd{
    struct Worker yuan;
    struct Jd* next;
};

void  creatFile(char* FName);/*创建文件*/
struct Jd* CreatL(char* FName);/*创建链表*/
void  WriteToFile(struct Jd* head, char* FName);
void  menu();/*菜单*/
//void  Entry(struct Jd* L);/*录入职工信息*/
void  Liulan(struct Jd* L);/*浏览职工信息*/
void  Search1(struct Jd* L);/*按照学历查找*/
void  Search2(struct Jd* L);/*按照职工号查找*/
void  Delete(struct Jd** L);/*删除职工信息*/         //修改
void  Add(struct Jd** L);/*添加职工信息*/            //修改
void  Revise(struct Jd* L);/*修改职工信息*/
void  WriteToFile(struct Jd* L, char* FName);/*将链表节点数据写往文件*/
void  Zong(struct Jd* L);/*计算职工总人数*/
void  Ben(struct Jd* L);/*计算本科以上学历的总人数*/

struct Jd* L = NULL;   //L 是全局变量  修改
char FileName[128] = { '\0' };       //修改
int main()
{
    strcpy(FileName, "worker.txt");// 修改 
    L = CreatL(FileName);          // 修改
    while (1)
    {
        menu();
    }
    return 0;
}

void creatFile(char* FName)
{
    int i = 1;
    struct Worker zhi;
    FILE* fp;
    if ((fp = fopen(FName, "a+")) == NULL) //if ((fp = fopen(FName, "wb")) == NULL) //修改
    {
        printf("cannot open file\n");
        exit(0);
    }
    while (i != 0)
    {
        printf("enter data of worker:\n");
        printf("职工号：");
        scanf("%d", &zhi.number);
        printf("姓名：");
        scanf("%s", zhi.name);
        printf("性别：");
        scanf("%s", zhi.sex);
        printf("年龄：");
        scanf("%d", &zhi.age);
        printf("学历：");
        scanf("%s", zhi.xueli);
        printf("工资：");
        scanf("%f", &zhi.gongzi);
        printf("住址：");
        scanf("%s", zhi.zhuzhi);
        printf("电话号码：");
        scanf("%s", zhi.phone);
        if (fwrite(&zhi, SIZEWO, 1, fp) != 1)
            printf("file write error\n");
        printf("还需要输入新的职工数据(0:停止 1:继续)");  //修改
        scanf("%d", &i);
    }
    fclose(fp);
}

struct Jd* CreatL(char* FName)
{
    FILE   *fp;
    struct Jd* p1, * p2, * head = NULL;
    struct Worker zhi;
    if ((fp = fopen(FName, "rb")) == NULL)
    {
        printf("cannot open file\n");
        return  head;  //exit(0);    //修改
    }
    while (fread(&zhi, SIZEWO, 1, fp) == 1)
    {
        p1 = (struct Jd*)malloc(SIZEJD);
        p1->yuan = zhi;                 
        p1->next = NULL;
        if (head == NULL)
        {
            head = p1;
            p2 = p1;
        }
        else
        {
            p2->next = p1;
            p2 = p1;
        }
    }
    fclose(fp);
    return (head);
}

void WriteToFile(struct Jd* L, char* FName)
{
    FILE* fp;
    struct Jd* p1;
    if ((fp = fopen(FName, "wb")) == NULL)
    {
        printf("cannot open file\n");
        exit(0);
    }
    p1 = L;
    while (p1 != NULL)
    {
        fwrite(&(p1->yuan), SIZEWO, 1, fp);
        p1 = p1->next;
    }
    fclose(fp);
}

void menu()
{
    int i;
    printf("欢迎使用职工管理系统\n");
    printf("1.职工信息录入\n");
    printf("2.职工信息浏览\n");
    printf("3.职工信息查询（按学历）\n");
    printf("4.职工信息查询（按职工号）\n");
    printf("5.职工信息删除\n");
    printf("6.职工信息插入\n");
    printf("7.职工信息修改\n");
    printf("8.统计职工总人数\n");
    printf("9.统计本科以上学历人数\n");
    printf("请输入您想要选择的功能编号：");
    scanf("%d", &i);
    //struct Jd* L = NULL;                  //修改
    //char FileName[128] = { '\0' };        //修改
    //strcpy(FileName, "worker.txt");       //修改
    switch (i)
    {
    case 1:
    {
        creatFile(FileName);
        L = CreatL(FileName);
    }
    break;
    case 2:
        Liulan(L);
        break;
    case 3:
        Search1(L);
        break;
    case 4:
        Search2(L);
        break;
    case 5:
        Delete(&L); //修改
        break;
    case 6:
        Add(&L);   //修改
        break;
    case 7:
        Revise(L);
        break;
    case 8:
        Zong(L);
        break;
    case 9:
        Ben(L);
        break;
    default:
        printf("请输入正确的数字才能使用菜单！");
        break;
    }
}

void Liulan(struct Jd* L)
{
    struct Jd* p1;
    p1 = L;
    while (p1 != NULL)
    {
        printf("%d %s %s %d %s %.2f %s %s\n", p1->yuan.number,
            p1->yuan.name, p1->yuan.sex, p1->yuan.age, p1->yuan.xueli,
            p1->yuan.gongzi, p1->yuan.zhuzhi, p1->yuan.phone);
        p1 = p1->next;
    }
}

void Search1(struct Jd* L)
{
    int flag = 0;   //修改
    char xue[20];
    printf("请输入您要查询的学历：");
    scanf("%s", xue);
    struct Jd* p1;
    p1 = L;
    while (p1 != NULL)
    {
        if (strcmp(p1->yuan.xueli, xue) == 0) {
            printf("%d %s %s %d %s %.2f %s %s\n", p1->yuan.number,
                p1->yuan.name, p1->yuan.sex, p1->yuan.age, p1->yuan.xueli,
                p1->yuan.gongzi, p1->yuan.zhuzhi, p1->yuan.phone);
            flag++;
        }
        p1 = p1->next;
    }
    if (!flag)    //修改
        printf("没有找到相关记录！\n");
}

void Search2(struct Jd* L)
{
    int num;
    printf("请输入您要查询的职工号：");
    scanf("%d", &num);
    struct Jd* p1;
    p1 = L;
    while (p1 != NULL)
    {
        if (p1->yuan.number == num)
        {
            printf("%d %s %s %d %s %.2f %s %s\n", p1->yuan.number,
                p1->yuan.name, p1->yuan.sex, p1->yuan.age, p1->yuan.xueli,
                p1->yuan.gongzi, p1->yuan.zhuzhi, p1->yuan.phone);
            break;
        }
        p1 = p1->next;
    }
    if (!p1)   //修改
        printf("没有找到相关记录！\n");
}

void Delete(struct Jd** L)  //修改
{
    int num, flag = 0;
    printf("请输入您要删除的职工号：");
    scanf("%d", &num);
    struct Jd* p1, * p2;
    p1 = (*L);    //修改
    p2 = (*L);     //修改
    while (p1 != NULL)
    {
        if (p1->yuan.number == num)
        {
            flag = 1;
            if (p1 == (*L))   //修改
            {
                (*L) = (*L)->next;   //修改
                free(p1);
                p1 = (*L);/*L发生了改变，因此一定要给p1,p2重新赋值*/
                p2 = (*L);
            }
            else
            {
                p2->next = p1->next;
                free(p1);
                p1 = p2;/*p1被释放了，后续应该从p2所在的节点开始检测*/
            }
        }
        else
        {
            p2 = p1;
            p1 = p1->next;
        }
    }
    if (flag == 0)
        printf("没有您要删除的职工号，请确认后再进行操作！\n");
    else
    {
        printf("删除成功！\n");
        WriteToFile((*L), "worker.txt");   //修改
    }
}

void Revise(struct Jd* L)
{
    int num, flag = 0;
    printf("请输入您要修改信息的职工的职工号：");
    scanf("%d", &num);
    struct Jd* p1;
    p1 = L;
    while (p1 != NULL)
    {
        if (p1->yuan.number == num)
        {
            flag = 1;
            printf("请输入您要修改的内容：\n");
            scanf("%d %s %s %d %s %f %s %s", &p1->yuan.number,
                p1->yuan.name, p1->yuan.sex, &p1->yuan.age, p1->yuan.xueli,
                &p1->yuan.gongzi, p1->yuan.zhuzhi, p1->yuan.phone);
            break;    //修改
        }
        p1 = p1->next;
    }
    if (flag == 0)
        printf("未能找到您要修改的职工的职工号，请检查后再输入！\n");
    else
    {
        printf("修改成功！\n");
        WriteToFile(L, "worker.txt");
    }
}

void Add(struct Jd** L) //修改
{
    printf("请输入要插入的职工的各项信息：");
    struct Jd* p1, * p2, * p;
    p1 = (*L);
    p2 = (*L);
    p = (struct Jd*)malloc(SIZEJD);
    p->next = NULL;
    scanf("%d %s %s %d %s %f %s %s", &p->yuan.number,
        p->yuan.name, p->yuan.sex, &p->yuan.age, p->yuan.xueli,
        &p->yuan.gongzi, p->yuan.zhuzhi, p->yuan.phone);
    if (!p1)                                        //修改
        (*L) = p;                                   //修改 
    else {                                          //修改
        while (p1 != NULL)
        {
            p2 = p1;
            p1 = p1->next;
        }
        p2->next = p;
    }
    p1 = (*L);                                     //修改
    while (p1 != NULL)
    {
        printf("%d %s %s %d %s %.2f %s %s\n", p1->yuan.number,
            p1->yuan.name, p1->yuan.sex, p1->yuan.age, p1->yuan.xueli,
            p1->yuan.gongzi, p1->yuan.zhuzhi, p1->yuan.phone);
        p1 = p1->next;
    }
    printf("添加成功！\n");
    WriteToFile((*L), "worker.txt");   //修改
}

void Zong(struct Jd* L)
{
    struct Jd* p1;
    p1 = L;
    int count = 0;
    while (p1 != NULL)
    {
        count++;
        p1 = p1->next;
    }
    printf("职工的总人数为：%d\n", count);
}

void Ben(struct Jd* L)
{
    struct Jd* p1;
    p1 = L;
    int count = 0;
    while (p1 != NULL)
    {
        if (strcmp(p1->yuan.xueli, "硕士") == 0 ||
            strcmp(p1->yuan.xueli, "博士") == 0 ||
            strcmp(p1->yuan.xueli, "博士后") == 0)
            count++;
        p1 = p1->next;
    }
    printf("本科以上学历的人数为：%d\n", count);
}